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Grade 1 Titanium vs. EN 1.7707 Steel

Grade 1 titanium belongs to the titanium alloys classification, while EN 1.7707 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is grade 1 titanium and the bottom bar is EN 1.7707 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
300
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 28
11
Fatigue Strength, MPa 170
500
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 39
73
Shear Strength, MPa 200
600
Tensile Strength: Ultimate (UTS), MPa 310
1010
Tensile Strength: Yield (Proof), MPa 220
800

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
460
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1420
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 20
39
Thermal Expansion, µm/m-K 8.8
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 37
3.3
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
1.9
Embodied Energy, MJ/kg 510
27
Embodied Water, L/kg 110
58

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79
110
Resilience: Unit (Modulus of Resilience), kJ/m3 230
1690
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 19
36
Strength to Weight: Bending, points 23
29
Thermal Diffusivity, mm2/s 8.2
11
Thermal Shock Resistance, points 24
29

Alloy Composition

Carbon (C), % 0 to 0.080
0.26 to 0.34
Chromium (Cr), % 0
2.3 to 2.7
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
94.7 to 96.8
Manganese (Mn), % 0
0.4 to 0.7
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0
0 to 0.6
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.035
Titanium (Ti), % 99.095 to 100
0
Vanadium (V), % 0
0.1 to 0.2
Residuals, % 0 to 0.4
0